BS 2767:1991:2001 Edition
$102.76
Specification for manually operated copper alloy valves for radiators
| Published By | Publication Date | Number of Pages |
| BSI | 2001 | 18 |
This British Standard specifies materials, essential aspects of design, and performance requirements for manually operated copper alloy valves for connection to hot water radiators.
Two types of valve are specified on the basis of their pressure ratings; type 4 with a maximum working pressure of 4 bar1) and type 10 with a maximum working pressure of 10 bar.
The range of sizes covered is suitable for use with radiators having ½ in, ¾ in, or 1 in female threaded connections in accordance with BS 21.
End connections for connection to the valve of 8, 10, 12, 15, 22 and 28 mm copper tube, and threads for ½, ¾ and 1 in threaded iron pipe are included.
The standard also covers valves with tailpieces, including tailpieces which incorporate a draining facility or an auxiliary valve.
NOTE 1 All pressures given are gauge pressures.
NOTE 2 Figure 1, Figure 2 and Figure 3 are solely for the purpose of showing alternative types, part names and, collectively, some typical variations of detail; they are not intended to influence design.
NOTE 3 Information to be supplied by the purchaser and requirements to be agreed between supplier and purchaser are given in Appendix A.
NOTE 4 The publications referred to in this Standard are listed on the inside back cover.
Specifies designation, pressure and temperature ratings, materials, design, construction and testing of manual valves. Includes handwheel torque strength test, connections for metric copper tubes, compression type tailpiece connections, plating and draining facility.
PDF Catalog
| PDF Pages | PDF Title |
|---|---|
| 1 | BRITISH STANDARD |
| 2 | Committees responsible for this British�Standard |
| 3 | Contents |
| 5 | 1 Scope 2 Definitions 2.1 manually operated valve 2.2 handwheel valve 2.3 lockshield valve 2.4 draining facility 2.5 auxiliary valve 3 Designation of valves by size |
| 6 | 4 Pressure and temperature ratings 5 Marking 6 Materials and manufacture 6.1 The materials used in the manufacture of the component parts of the valves shall be as given in� 6.2 Materials shall be free from defects, such as cracking, laminations, voids and inclusions. Ca… 6.3 Plastics handwheels shall comply with� |
| 7 | Table 1 – Materials |
| 8 | 7 Design and construction 7.1 General Table 2 – Minimum flow area through valve and tailpiece |
| 9 | Figure 1 – Typical angle pattern valve Table 3 – Component dimensions |
| 10 | Figure 2 – Typical Y-pattern valve 7.2 Body connections |
| 11 | Figure 3 – Typical gate pattern valve 7.3 Stem seal and servicing 7.4 Discs 7.5 Handwheel |
| 12 | 7.6 Tailpiece Table 4 – Test requirements for rubber stem seals 7.7 Draining facility |
| 13 | 8 Type tests 8.1 Hydrostatic tests at ambient temperature 8.2 Handwheel torque test 8.3 Union nut torque test 9 Routine pressure tests 9.1 General 9.2 Hydrostatic test |
| 14 | 9.3 Pneumatic test Figure 4 – Tailpiece incorporating an auxiliary valve |
| 15 | Appendix A Information to be supplied and requirements to be agreed A.1 Information to be supplied by the purchaser A.2 Requirements to be agreed between supplier and purchaser Appendix B Method of testing the torque strength of the handwheel when assembled to the valve B.1 Apparatus B.1.1 B.2 Procedure Table 5 – Torque values for testing the handwheel when assembled to the valve |
| 16 | Figure 5 – Arrangement for testing the resistance of the handwheel to torque Appendix C Method of testing the torque strength of the union nut Table 6 – Torque values for testing the union nut |
